Improvement in fire and water proof roofs



T..N\=.w. Fire and Water-Pruof Roofs. No, 146,503I Parentedllamzmlu.

WITNESSES e "mmm .N UNITED STATES PATENT OEEICEo TOBIAS NEW, OF NEWYORK, N. Y.

IMPRo-vEMi-:NT IN FIRE AND WATER PROOF RooFys.

Speciicationforming part of Letters, Patent No..146,608. dated January20, 1874 application led f November 8, 1873.

To all whom it may concern Be it known that I, ToBIAs NEW, of the city,county, and State of New York, have invented a new and Improved Fire andWater Proof Roof; and I do hereby declare that the following is a full,clear, and exact description of the saine, reference being had to theaccompanying drawing forming a part of this speciiication. A

The object of this invention is to provide means for protect-in gbuildin gs (having interior wooden timbers) from lire as well as fromwater;` and consists of a roof made as hereinafter described. l

A represents the rafters or roof-timbers; B,

Ithe planking; 0, one of the outer or parting walls; and I), a feltlayer covered by a coating ot' asphaltie cement, E, which may or may notbe used between the timber B and a layer of concrete or equivalentfire-proof material, F. This stratum of lire-proof material is laid onthe felt or planking B of the roof. In practice, this fire-proof laye-rF will be about two inches in thickness. G is a piece of timber orplank, which is bedded in the nre-proof substance F,

l and has its upper side tlush with the surface thereof. On this isplaced a water-repellent covering, H, and over this an ordinary grayfel,slate, tin, or other roof, I.

The rationale of thus combining with the wood I5, iirst, a fire-prooflayer, F, next, a water-repellent, H, and, thirdly, an ordinary gravelor other roof, is this:` The fire-proef.

layer, although ordinarily turning water, is a slow absorbent, and wouldallow a gradual dampness t0 pervade it, and, consequently, thewood-work; hence I use over itan absolute water-repellenaH, which willnot only turn an ordinary rain, but will entirely pre vent the passagetherethrough of moisture during the longest spell of wet weather, or thegradual melting of snow upon the roof. This water-repellent H, however,is itself injuriously ail'ected by the sun, which, to a greater' or lessextent, soon destroys its eiiciency it' not protected; hence I superposeany ordinary roof, I, upon the layer H.

Having thus described niy invention, what I claim as new, and desire tosecure by Letters Patent, is-

The combination of the fire-proof layer F adj aeent to the wood-work,the water-repellent layer H next to this, and the outer roof I, as andfor the purpose specified.

\ TOBIAS NEWT.

Witnesses II. N. TAFT, ALEX. F. ROBERTS.

